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a9947c9768
Creates a NoNewThreadsChecker plugin that looks for the function and checks to see if it's allowed. -Creates two allowlists - `ThreadAllows.txt` is for thread names, while `ThreadFileAllows.txt` checks for entire files where instances of `NS_NewNamedThread` should be ignored. -If an instance of `NS_NewNamedThread` is not listed in either list, then the checker throws an error with an additional note containing a more descriptive explanation of the failure. Differential Revision: https://phabricator.services.mozilla.com/D62635 --HG-- extra : moz-landing-system : lando
36 lines
1.4 KiB
C++
36 lines
1.4 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "NoNewThreadsChecker.h"
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#include "CustomMatchers.h"
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void NoNewThreadsChecker::registerMatchers(MatchFinder *AstMatcher) {
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// The checker looks for:
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// -Instances of NS_NewNamedThread that aren't in allowed files
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// -Instances of NS_NewNamedThread that use names that aren't recognized
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AstMatcher->addMatcher(
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callExpr(allOf(isFirstParty(),
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callee(functionDecl(hasName("NS_NewNamedThread"))),
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unless(isInAllowlistForThreads())))
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.bind("funcCall"),
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this);
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}
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void NoNewThreadsChecker::check(const MatchFinder::MatchResult &Result) {
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const CallExpr *FuncCall = Result.Nodes.getNodeAs<CallExpr>("funcCall");
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if (FuncCall) {
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diag(FuncCall->getBeginLoc(),
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"Thread name not recognized. Please use the background thread pool.",
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DiagnosticIDs::Error)
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<< FuncCall->getDirectCallee()->getName();
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diag(
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FuncCall->getBeginLoc(),
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"NS_NewNamedThread has been deprecated in favor of background "
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"task dispatch via NS_DispatchBackgroundTask and "
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"NS_CreateBackgroundTaskQueue. If you must create a new ad-hoc thread, "
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"have your thread name added to ThreadAllows.txt.",
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DiagnosticIDs::Note);
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}
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}
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